Home / 28,903.09-39,838.55-19,339.56

Finding the Fourth Proportional to 28,903.09, 39,838.55 and 19,339.56

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Solution

The fourth proportional to 28,903.09, 39,838.55 and 19,339.56 is: 26,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.09 : 39,838.55 = 19,339.56 : x
  2. Step 2: Convert to fraction form
    28,903.09/39,838.55 = 19,339.56/x
  3. Step 3: Cross multiply
    28,903.09x = 39,838.55 × 19,339.56
  4. Step 4: Simplify right side
    28,903.09x = 770,460,028.04
  5. Step 5: Solve for x
    x = 770,460,028.04/28,903.09
  6. Step 6: Final answer
    x = 26,656.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.